User interface for results of IBS, GRM, and Kinship coefficient calculations with heatmap of IBS displayed. The parameters used are shown in Additional file 2 : Table S3 (Run A). 1 Four tabs in the main menu of the user interface with the 'IBS and GRM calculation & Kinship Coefficients estimation' tab selected; 2 a radio button for choosing any of the three methods, namely the IBS matrix calculation, the Genomic Relationship Matrix calculation, and the KING-robust kinship estimation; 3 a radio button to select the order of the samples, which can be the same as in the matrix obtained by the corresponding PLINK command ('PLINK Sample ID') or can be remade according to the groups/clusters to which the samples are assigned ('Group/Cluster number'); 4 a gradient color bar that maps colors to their corresponding values; 5 the corresponding value for pairs of samples and their IDs/names displayed by hovering the mouse over the colored square; 7 a button to download the results of the IBS, GRM, and kinship calculation as a ZIP file. The interactive heatmap represents the genetic similarity between samples, namely the IBS matrix calculated for 141 accessions of rice varieties, in which the samples are ordered by 'Group/Cluster number'. The symbol prime (') at the upper right of the numbers indicates selected items